Popemobile Parade on Pennsylvania Ave.

Pennsylvania Avenue NW is clear of traffic and lined with police and spectators awaiting the Popemobile procession.

Pope Benedict XVI's route takes up west on Pennsylvania through Washington Circle, which is closed to pedestrian cross traffic. He'll go up Rock Creek Parkway to Massachusetts Avenue NW before arriving at the Vatican Embassy on Observatory Circle.

Unless you're going to see the pope, that western sector of Washington is a place to avoid for the next couple of hours.